What scientific study are you waiting for that'll just shit on everything we've once thought to have believed in?

Was going to post this. Not very sanitary (hand washing first is required) or attractive, but it is good for your immune system in the long run. Ken Jennings, the jeopardy guy mentions it in his book.

That may actually explain why I rarely get sick. I'm having a hard time remembering a single day of this year where I was sick that wasn't caused by things like eating uncooked foods or something else of that nature.